On my opinion systems were damaged before the date when KB2919355 became available.
The crash of KB2919355 only indicates the damage that had been hidden.
Microsoft is still silent.
I try to find out relationships.
Corruption may be because of the installation 3-rd party programs, an installation .Net Framework from some external source, an improper installation of Windows updates and so on. The order in which updates were installed, it is very significant. If you upgraded your system in that day when there was the Windows 8 release, you install all updates in series. If you have upgraded your system resently, you may install them in arbitrary order or skip some steps. As you can see, automatic update was on and there is no an obvious reason in this case. It is not the longest soap opera in history yet. Quest with КВ2756872 continued about three months.